The suppression effect of a periodic surface with semicircular grooves on the high power microwave long pill-box window multipactor phenomenon

Journal Article · Mon Sep 15 04:00:00 EDT 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4894222· OSTI ID:22303611

Zhang, Xue; Wang, Yong; Fan, Junjie; Zhong, Yong; Zhang, Rui ^[1]

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1. Institute of Electronics, Chinese Academy of Sciences, Peking, 100190 China (China)

To improve the transmitting power in an S-band klystron, a long pill-box window that has a disk with grooves with a semicircular cross section is theoretically investigated and simulated. A Monte-Carlo algorithm is used to track the secondary electron trajectories and analyze the multipactor scenario in the long pill-box window and on the grooved surface. Extending the height of the long-box window can decrease the normal electric field on the surface of the window disk, but the single surface multipactor still exists. It is confirmed that the window disk with periodic semicircular grooves can explicitly suppress the multipactor and predominantly depresses the local field enhancement and the bottom continuous multipactor. The difference between semicircular and sharp boundary grooves is clarified numerically and analytically.

• OSTI ID: 22303611
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 9 Vol. 21; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CROSS SECTIONS
ELECTRIC FIELDS
ELECTRONS
KLYSTRONS
MICROWAVE RADIATION
MONTE CARLO METHOD
PARTICLE TRACKS
PERIODICITY
SIMULATION
SURFACES
TRAJECTORIES